baber/WOPTO huggingface dataset:
Patent GB-244430-A (GB)
Title: Improvements in refrigerators
IPC: F25D23/00
Filed: 1925-10-31
Abstract: 244,430. Mannesmann Kõlte Industrie Akt.-Ges. Dec. 9, 1924, [Convention date]. Refrigerating-chambers. - In order to prevent the escape of cold air from the bottom of the storage compartment of a mechanically-cooled refrigerator 1, when the door of the compartment is opened, a removable dam or baffle 3 or an open-topped container 6 is provided at the lower part of the compartment, and extending above the bottom of the door opening. The baffle 3 may fit into side and bottom guides 5, with or without packing. The Specification as open to inspection under Sect. 91 (3) (a) comprises also a construction wherein the door frame is raised above the floor of the refrigerator to provide a storage of cold air. This subject-matter does not appear in the Specification as accepted.
Patent GB-989902-A (GB)
Title: Antifungal 1,4-dioxaspirodecanes
Inventor: GALLO GIANGUALBERTO
IPC: C07D317/72
Filed: 1962-07-17
Abstract: The invention comprises antifungal compounds of formula <FORM:0989902/C2/1> wherein R is halogen and n is an integer of 2 to 4 inclusive and the preparation thereof from a compound of formula <FORM:0989902/C2/2> by action of a halogen in the presence of a proton acceptor e.g. a tertiary organic base such as pyridine or an inorganic base such as sodium hydroxide, at room temperature in an inert organic solvent.  2,3,5,6 - Tetrachloro - 4 - hydroxyphenoxy acetic acid is prepared by heating equimolecular amounts of chloroacetic acid and 2,3,4,5-tetrachlorohydroxyquinon in the presence of an alkaline catalyst followed by acidification.
Patent GB-153292-A (GB)
Title: Improvements in driving mechanism for reciprocating platens
IPC: B23D7/00
Filed: 1920-09-28
Abstract: 153,292. Conradson, C. M. Oct. 29, 1919, [Convention date]. Planing. - Planing-machines of the type having one or more working speeds and a single quick return have automatic fluid-pressure-controlled means for reversing the work-ta.ble and operating the tool feeds. The driving-shaft 144, Fig. 4, driven from an electric motor 146 carries a pinion 148 engaging the teeth on a clutch member 27<b> loose on a hollow shaft 24 and pinions 149 - - 152 engaging sliding pinions 149<a>- - 152a on a shaft 153 which carries a pinion 155 engaging teeth on a second loose clutch-member 27. Cone members having outwardly-extending rims 36, 36b, are slidably mounted on the shaft 24 and are separated by a spacing-rod 32 by means of which when one clutch is engaged the other is positively disengaged. When the clutch B is engaged, the table 18 is driven from the shaft 24 through the gearing shown in Fig. 3 at a quick-return speed, and when clutch A is engaged one of the low working speeds is obtained. The clutches are operated by air pressure controlled by a valve, Fig. 11, supplied by a pipe 66 and having a branch 58 connected to the clutch A and the outer end of a cylinder 57 and a branch 65 connected to clutch B and the inner end of cylinder 57. The valve is operated to actuate either clutch by means of a rod 70 connected to a pivoted lever 82 rocked by adjustable trip lugs 88, 89 on the table 18. An identical tripping mechanism may be provided on the other side of the machine. Simultaneously with the reversal of the table for the working stroke, the tool feeding mechanism is actuated. The cylinder 57 has a piston 103, the rod 104 of which has rack teeth engaging a pinion on a shaft 108 carrying an adjustable crank-disk operating through a connecting-rod 119 to rock a segment 122 engaging a vertical rack bar 126. The latter engages a pinion on a shaft 130 having a ratchet device so constructed that on the downward movement of the rack bar, the shaft 130 is rotated to operate the horizontal and vertical feeds of the tool blocks 141. The rack bar may be extended vertically to operate the horizontal feed of a second tool block. The sliding gears 149a - - 152<a> on the shaft 153 are actuated to change the working speed of the table by means of shifter rods 170 and 171 having rack portions 176, Fig. 7, actuated by a lever 177 adapted to engage either of the rods and working in a gate 184. A lock bolt 188 engages bevelled slots in the shifter rods to keep the required gear in mesh or to hold either rod in the neutral position.
Patent GB-793117-A (GB)
Title: Process for union dyeing of acrylonitrile polymer fiber and basic nitrogenous fiber blends
IPC: D06P3/82
Filed: 1955-09-28
Abstract: Blends of basic nitrogenous fibres, e.g. wool, regenerated protein and polyamide fibres, with fibres containing at least 80 per cent by weight polyacrylonitrile and 2-10 per cent by weight of a polyvinyl-pyridine are dyed in a bath containing an acid, a cationic surface-active agent and a wool-type dye, e.g. a level dyeing acid dye, chrome dye, metallized acid dye, weak acid dye or premetallized neutral dye.  In certain cases the dyebath may also contain a non-ionic surface-active agent.  Specified cationic agents are those of the alkylol higher alkyl guanidine salt type such as N1-ethanol-N3-dodecyl guanidine acetate, the higher alkylated guanidine salt type such as dodecyl-guanidine bi-carbonate-ethylene oxide condensation product, the higher alkyl N-substituted morpholines such as N-cetyl-N-ethylmorpholinium ethosulphate and ethylene oxide condensation products with higher alkyl amines or with amides of higher fatty acids.  Specified acids are sulphuric, formic and acetic acids and when premetallized neutral dyes are employed the necessary pH may be initially obtained by addition of ammonium sulphate or acetate and then, if necessary, maintained by additions of one or more acids.  Specified non-ionic agents are condensation products of polyglycols with higher fatty acids, with higher fatty alcohols, or with long-chain alkyl substituted phenols.  Examples are given.
Patent GB-751726-A (GB)
Title: Safety coupling for power transmission mechanisms
IPC: F16D25/064
Filed: 1952-11-03
Abstract: 751,726. Friction and positive clutches. HINDMARCH, T. Oct. 16, 1953 [Nov. 3, 1952], No. 27635/52. Class 80(2) A fluid pressure operated friction clutch capable of limited slip while transmitting torque incorporates a positive clutch the engaging members of which are capable of restricted relative rotational movement when in engagement. Friction clutch members 11, 12, axially slidable but rotationally secured to a shaft 2 are engageable with and disengageable from members 3, 4, fixed to a gear-wheel 1 by fluid pressure admitted to a chamber 21 or to chambers 14, 15, respectively. A member 25 fixed to the gear 1 has a projection 26 enclosed by a member 28 with springs 29, Fig. 5, interposed. A disc 13 axially slidable on but rotationally fixed to the shaft 2 has an abutment 30 which can be engaged with and disengaged from the member 28 by admitting fluid pressure to chamber 35 or 31 respectively. The disc 13 may be actuated manually by means engaging a groove 39 on a sleeeve 10 integral with the disc 13. The engaging faces of the positive clutch members 28, 30, may be tapered so that they disengage upon overload. In a modification the positive clutch is disengaged by spring means and manually actuating means is omitted. In another modification the positive clutch is engaged by spring means and disengaged by fluid pressure. In a further construction the disc member 13 embodies a spring coupling unit of the kind described in Specifications 594,904 and 741,744 referred to in the Provisional Specification.
Patent GB-903082-A (GB)
Title: Improvements in and relating to the protection of electric motors during stalling
Inventor: SHAW NORMAN HARRY
IPC: H02P5/68
Filed: 1957-09-02
Abstract: 903,082. Control of several D.C. motors. ENGLISH ELECTRIC CO. Ltd. Sept. 2, 1958 [Sept. 2, 1957], No. 27653/57. Class 38 (3). A protective circuit for detecting a sustained stalling condition of any one of motors 11a, 11b, 11c, comprises a trip circuit 12 for deenergizing generator field winding 10a and so de-energizing the motors. A magnetic amplifier 13 for controlling trip relay 15 is biased to the saturated condition by winding 13e, and the amplifier will become unsaturated to operate the relay only when the energization of speed-responsive winding 13d is substantially zero and the energization of current-responsive winding 13b is above a predetermined value. Due to a rectifier gating system 31, the current in the winding 13b is determined by the current in the motor carrying the heaviest load, each half of the winding being effective for different directions of rotation. As the current-signal increases, a greater proportion of current is diverted from the winding 13b through a circuit comprising rectifier 32 and resistor 33, the arrangement being such that, for large currents the magnetic amplifier operation is determined solely by the condition that the speed of the most heavily-loaded motor is less than a predetermined value. For low motor currents, the speed at which the amplifier operates is much less than this value. Relay operation is made further conditional upon rate-of-change of speed being zero at the same time that the speed is at a low value, a winding 13c, which is connected to generator winding 10b being provided for this purpose. The winding 13c also co-operates with a damping transformer 17 to delay closure of the trip circuit for a period sufficient to allow manual removal of the stalled condition, if desired. Specifications 903,081 and 903,083 are referred to.
Patent GB-1098893-A (GB)
Title: Improvements in or relating to an electric toothbrush
IPC: A61C17/40
Filed: 1966-06-21
Abstract: 1,098,893. Toothbrushes. SCOVILL MANUFACTURING CO. June 21, 1966 [Aug. 19, 1965], No. 27770/66. Heading A4K. An orbital motion drive is transmitted to an ordinary toothbrush through an holder assembly, having clamping bars 25, resiliently urged together to grip the brush handle 20. The bars 25 are supported in housing 21 by leaf springs 28 and bound together by resilient O-rings (33). The housing 21 is mounted on balls 35 so that it is free to follow the movement of crank pin 43, which engages a round hole in stem 23. A flexible waterproof diaphragm 38 is provided.
Patent GB-985670-A (GB)
Title: Improvements in electrical capacitors
IPC: H01G4/10
Filed: 1961-08-01
Abstract: 985,670. Capacitors. GENERAL ELECTRIC CO. Aug. 1, 1961 [Oct. 19, 1960], No. 27888/61. Heading H1M. A capacitor (Fig. 1, not shown) comprises a flat base electrode of film forming metal coated with an anodic oxide non-porous dielectric film overlain by a high resistivity (10<SP>3</SP> ohm cm.) and dielectric constant (2) non anodic insulating layer, coated with a counter electrode. A wound capacitor (Fig. 2) comprises a foil 9 of film forming metal anodically oxidized at 10 on both sides and coated with a non-anodic insulating layer 11 having therein a counter electrode 12; the lamination being spirally rolled so that opposed surfaces of electrodes 12 are in contact throughout. An electrolytic capacitor (Fig. 3) comprises a cathodic casing 16 of e.g. silver, copper, tantalum, aluminium, lead or tin, containing electrolyte 17 e.g. ammonium borate/glycol solution immersed in which is wound electrode 18 constructed as in Fig. 2 without the counter electrode layer 12, connected to lead 19 sealed through insulating plug 20 around which the neck of the casing is crimped. A spacer may be inserted between the electrodes. The film forming metals may be aluminium, tantalum, zirconium, titanium, niobium or their alloys anodized e.g. in boric acid or glycolonitrile and the counter-electrode may be of aluminium, tin, silver, copper, lead, zinc or carbon deposited by sputtering, dipping, painting, spraying, or chemical deposition. The non-anodic insulating layer may be of silicon monoxide, calcium silicate, zinc sulphide or, more generally, oxides, silicates phosphates, halides, titanates, arsenates, sulphur compounds; glass, mica, synthetic and natural resins, paraffins, polystyrenes, polyacrylates, or fluorohydrocarbon polymers. These may be deposited by vapour deposition, vacuum evaporation, electrophoresis, cataphoresis, dipping, spraying, painting, pyrolysis, chemical deposition, or sputtering.
Patent GB-759622-A (GB)
Title: Improvements in or relating to rotary wing aircraft
Inventor: LIGHTFOOT RALPH BUTTERWORTH
IPC: B64C27/30
Filed: 1953-10-12
Abstract: 759,622. Helicopters. UNITED AIRCRAFT CORPORATION. Oct. 12,1953, No. 27985/53. Class 4. A rotary wing aircraft comprises a plurality of dynamically and aerodynamically balanced blades having provision for causing, during forward translational flight of the aircraft, blade-pitch changing moments the summation of which is effective, at any rotational position of said blades, in a sense to decrease the translational velocity of the aircraft. The invention is described in connection with a rotor of the type disclosed in Specification 651,391 wherein each blade 12 is provided with a trailing edge tab 80 which is given permanent upward set of X degrees in order to impart to each blade an upward pitching moment. Since the effect of the tab depends on relative airspeed the blade on the advancing side will pitch up to a greater extent than the blade on the retreating side with the result that the rotor and lift vector will always tend to a " no forward translation " position. In reversible controls this tendency is reacted by the pilot and in non-reversible controls by torsion of the blades and reaction on the helicopter body. Dynamic and aerodynamic stability is achieved by the location of the aerodynamic centre 82 ahead of and the centre of gravity C.G. behind the pitch changing axis 38. The location of the aerodynamic centre forwardly of the pitch changing axis creates also lateral stability of the aircraft. This is claimed independently in Specification 759,672.
Patent GB-752532-A (GB)
Title: Tape measuring device for a teleprinter message storing unit
IPC: H04L13/06
Filed: 1954-09-28
Abstract: 752,532. Telegraph exchange systems. AUTOMATIC ELECTRIC LABORATORIES, Inc. Sept. 28, 1954 [Oct. 13, 1953], No. 27985/54. Class 40 (3). A telegraph system having a message-storage unit comprising means to record signals on a tape which is fed to a storage bin for the recorded tape and a transmitter for transmitting signals from the stored tape, incorporates means for indicating the amount of tape in the bin and means actuated by each operation of the recording mechanism to control the indicator in one manner to show the receipt of additional tape in the bin. The unit also includes means actuated by each transmitter operation to control the indicator means in another manner to indicate removal of tape from the storage bin. The message storage unit may be incorporated in the automatic switching system of Specification 722,777, and an incoming message is allotted by a selector switch 108 to a free storage unit comprising reperforator 102, storage bin 110 and transmitter 103 from which signals are passed via selector 107 to an outgoing line 109. The amount of tape in the bin 110 is indicated by a measuring device 105 which also actuates control circuits 106 operating warning lamps and, when the amount of tape exceeds a predetermined value, marking the storage unit busy by a lead 315 and a second bank of the switch 108. Each reception and transmission of a character actuates respectively a forward or backward: magnet of a bidirectional differential mechanism 300 operating through speed-reduction gear 301 a shaft 302 carrying a pointer 303 moving over a graduated scale 304. When the amount of tape remaining in the bin is 50 feet, a cam 305 closes contacts 309 to illuminate a lamp 313, and when the amount reaches 80 feet contacts 310 are closed by a cam 306 so that the closure of contacts 311 by cam 307 for a stored length of 90 feet operates relay R340 which locks up over contacts 342, 310 and at contacts 341 marks the line 315 busy so that further incoming messages cannot be switched to this storage unit. If the amount of tape in the bin is reduced by feed-out for transmission, the locking circuit for the relay R340 is opened when the amount falls below 80 feet, and the unit is no longer marked " busy " so that it is free for the storage of further messages. If the amount stored increases to 100 feet or more, a cam 308 closes contacts 312 illuminating a second warning lamp 314. The bidirectional differential mechanism comprises two magnets energized respectively for each character received or transmitted and operating pawls driving ratchets connected to gear wheels meshing separately with planet wheels mounted in a carrier which through two meshing gears and a speed-reduction device drives the shaft 302 in the appropriate direction.
Patent GB-775131-A (GB)
Title: Improvements in and relating to liquid-fuel burning heaters
Inventor: RICHARDS GEORGE WILLIAM FRANCI
IPC: F23C99/00
Filed: 1954-09-28
Abstract: 775,131. Vapour burners. LION STAMPING CO., Ltd. Sept. 20, 1955. [Sept. 28, 1954], No. 28029/54. Class 75(1) [Also in Group XIII] In an immersion or other heater comprising a downtake flue 10 and an uptake flue 12 connected in series, e.g. by a horse-shoe shaped duct 14. and a burner 16 which vaporizes liquid fuel and burns it in the downtake flue, means are provided for holding in the uptake flue 12 a torch 28 which, on ignition, creates a downdraught through the downtake flue. In the form shown, each flue has an inclined branch tube 26, 40 at the side, to receive a torch. Two torches 28 34 are carried on the ends of rods 30, 36 projecting from a bar 42. Plugs 44, 46 close the ends of the branch tubes when the torches are inserted. The torch 28 is larger than the torch 34, to create a greater updraught in the uptake flue 12. The burner has a perforated vaporization plate 17 on to which oil drips from a tap 20 fed from a tank 18
Patent GB-773648-A (GB)
Title: Improvements in or relating to resolution of dl-pyrrolidonecarboxylic acid
IPC: C07D207/28
Filed: 1955-10-03
Abstract: A process for resolving DL-pyrrolidonecarboxylic acid comprises reacting DL-pyrrolidonecarboxylic acid with an optically active form of a C1-C7 alkanol ester of tyrosine in solution in a C1-C7 alkanol and fractionally crystallizing the product from the solution. Preferably 1.0 to 1.2 mols. of tyrosine ester are employed per mol. of DL-pyrrolidonecarboxylic acid and 30 to 35 times the weight of solvent is employed per weight of said acid. Exemplified alkanol solvents are methanol, ethanol, propanol, isopropanol, butanol, n-butanol, secondary-butanol, tertiary-butanol and tertiary-amyl alcohol.  Exemplified tyrosine esters are those derived from the above alkanols.  In examples DL-pyrrolidone carboxylic acid is reacted with L-n-butyl tyrosinate and the resulting D - pyrrolidonecarboxylic acid - L - n - butyl tyrosinate separated by crystallization; the mother liquor is adjusted to a pH of 8.0 to 9.5 to precipitate L-n-butyl tyrosinate and the liquid phase either evaporated to dryness to yield L-pyrrolidonecarboxylic acid or hydrolysed and the resulting L-glutamic acid crystallized therefrom at its isoelectric point.  The D-pyrrolidonecarboxylic acid-L-n-butyl tyrosinate may be dissolved in water and the pH adjusted to between 8.0 and 9.5 to precipitate the L-n-butyl tyrosinate for re-use.  The D-pyrrolidonecarboxylic acid may be racemized by melting to produce a further quantity of starting material.
Patent GB-408883-A (GB)
Title: Improvements in the regulation of independent power stations for the supply of current and steam
IPC: F01K7/16
Filed: 1933-10-11
Abstract: 408,883. Steam turbine plant. AKT.- GES. BROWN, BOVERI, ET CIE, Baden, Switzerland. Oct. 11, 1933, No. 28110. Convention date, Feb. 13. [Class 110 (iii).] Relates to a steam plant in which the steam is used for power-production and heating purposes, and in which both the frequency of the electric network and the pressure of the heating system are kept constant. The main steam pipe d feeds a back-pressure turbine b which exhausts into the heating main e, and also a condensing turbine a driving a generator on the same electric network. The turbines are regulated so that, while the condensing turbine a is producing power, the speedregulating mechanism n of the back-pressure turbine is automatically put out of operation. Should, however, the power given off by the condensing turbine fall off by a predetermined amount, owing to an increase in the heating steam demand or a drop in the current demand so that the frequency can no longer be maintained by this machine, the speed-regulating mechanism n of the back-pressure turbine is put into operation automatically in order to maintain the frequency. In the arrangement shown the governor n is rendered operative or inoperative by a manometer o which actuates contacts p, q. The manometer is responsive to the pressure of the oil in the system which controls the admission valves l of the condensing turbine. The regulation may be effected by a power meter, or by a device responsive to the steam pressure at any point in the blading. The governor n may be adjusted by compressed air, or by hydraulic or mechanical means.
Patent GB-777905-A (GB)
Title: Improvements in or relating to apparatus for detecting the presence of a conductive medium by its cooling effect on an electrically heated resistance
IPC: G01N27/18
Filed: 1955-10-03
Abstract: 777,905. Automatic level control systems. MINNEAPOLIS - HONEYWELL REGULATOR CO. Oct. 3, 1955 [Oct. 1, 1954], No. 28115/55. Class 38 (4). [Also in Group XVIII] In a liquid level control system in which fall of level in a fuel tank 10 below that shown decreases the cooling of a resistor 14 having a negative temperature coefficient, so that the Wheatstone bridge circuit in which it is connected becomes unbalanced to energize an electrically-operated valve 12 admitting more fuel, and in which variations of ambient temperature are compensated by a second temperature variable resistor 13 insulated from the cooling effect of the fuel, a third resistor 15 having a negative temperature coefficient, cooled by the fuel when it reaches the desired level, is arranged in series with valve 12 so that the resistance of the load circuit is increased when the bridge is balanced. This is achieved in a modification by a bimetallic strip, carrying the valve current, which is cooled by the fuel when it reaches the desired level and opens contacts to insert a series resistor. Operation of an indicator or relay instead of valve 12 is referred to.
Patent GB-298475-A (GB)
IPC: H04R1/00
Filed: 1928-10-03
Abstract: 298,475. Caine, G. R. H., and Denning- ton, H. Scott-, (Assignees of Smith, W. D.). Oct. 8, 1927, [Convention date]. Magnetic instruments; systems for transmitting music. -A number of musical instruments 4 - - 7, such as a, cornet, trombone &c. having the same audio characteristics as the instruments used in prcducing the sound record 1 form the horns of electromagnetic receivers 8 which are operated through the intermediary of an amplifier by a pick-up 2. In a modification the instruments may be associated with a single receiver.